1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/* Intel Indeo 3 decompressor, derived from ffmpeg.
*
* Original copyright note:
* Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
* written, produced, and directed by Alan Smithee
*/
#ifndef GRAPHICS_VIDEO_INDEO3_H
#define GRAPHICS_VIDEO_INDEO3_H
#include "common/stream.h"
namespace Graphics {
class PaletteLUT;
class SierraLight;
}
namespace Graphics {
class Indeo3 {
public:
enum DitherAlgorithm {
kDitherNone = 0,
kDitherSierraLight
};
Indeo3(int16 width, int16 height, Graphics::PaletteLUT *palLUT);
~Indeo3();
static bool isIndeo3(byte *data, uint32 dataLen);
void setDither(DitherAlgorithm dither);
bool decompressFrame(byte *inData, uint32 dataLen,
byte *outData, uint16 width, uint16 height);
private:
static const int _corrector_type_0[24];
static const int _corrector_type_2[8];
static const uint32 correction[];
static const uint32 correctionloworder[];
static const uint32 correctionhighorder[];
struct YUVBufs {
byte *Ybuf;
byte *Ubuf;
byte *Vbuf;
byte *the_buf;
uint32 the_buf_size;
uint16 y_w, y_h;
uint16 uv_w, uv_h;
};
int16 _width;
int16 _height;
YUVBufs _iv_frame[2];
YUVBufs *_cur_frame;
YUVBufs *_ref_frame;
byte *_ModPred;
uint16 *_corrector_type;
Graphics::PaletteLUT *_palLUT;
DitherAlgorithm _dither;
Graphics::SierraLight *_ditherSL;
struct BlitState {
uint32 curX, curY;
uint16 widthY, widthUV;
uint16 heightY, heightUV;
uint16 uwidthUV, uwidthOut;
uint16 uheightUV, uheightOut;
uint16 scaleWYUV, scaleWYOut;
uint16 scaleHYUV, scaleHYOut;
uint16 lineWidthOut, lineHeightOut;
byte *bufY, *bufU, *bufV, *bufOut;
};
void buildModPred();
void allocFrames();
void decodeChunk(byte *cur, byte *ref, int width, int height,
const byte *buf1, uint32 fflags2, const byte *hdr,
const byte *buf2, int min_width_160);
void blitFrame(BlitState &s);
void blitLine(BlitState &s);
void blitLineDither(BlitState &s);
};
} // End of namespace Graphics
#endif // GRAPHICS_VIDEO_INDEO3_H
|
